From 27d99728293f066d4ad2fc61775454d4d4b71b33 Mon Sep 17 00:00:00 2001 From: Devi Date: Wed, 19 Jun 2013 16:03:23 +0530 Subject: [PATCH] check if compostite_class is of class type before checking if it is a subclass of `MutableComposite` --- lib/sqlalchemy/ext/mutable.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/sqlalchemy/ext/mutable.py b/lib/sqlalchemy/ext/mutable.py index ca27f172f3..f503ad6d44 100644 --- a/lib/sqlalchemy/ext/mutable.py +++ b/lib/sqlalchemy/ext/mutable.py @@ -588,9 +588,10 @@ class MutableComposite(MutableBase): setattr(parent, attr_name, value) def _setup_composite_listener(): + import types def _listen_for_type(mapper, class_): for prop in mapper.iterate_properties: - if (hasattr(prop, 'composite_class') and + if (hasattr(prop, 'composite_class') and (type(prop.composite_class) is types.ClassType) and issubclass(prop.composite_class, MutableComposite)): prop.composite_class._listen_on_attribute( getattr(class_, prop.key), False, class_) -- 2.47.3